Display Device with Touch Panel

• US 20100001969A1
• Filed: 07/02/2009
• Published: 01/07/2010
• Est. Priority Date: 07/04/2008
• Status: Abandoned Application

• Current Assignee: Panasonic Liquid Crystal Display Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Hitachi Displays Limited (Japan Display Incorporated)
• Inventors: SAITO, Teruaki, Sato, Hideo, Nishitani, Shigeyuki
• Application Number:
  US12/496,731
• Publication Number:
  US 20100001969A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

In a display device with a touch panel which includes a display panel and a touch panel which is arranged to face the display panel in an opposed manner, the touch panel includes a transparent substrate, a plurality of first electrodes which is formed on a surface of the transparent substrate on a side facing the display panel, and a plurality of second electrodes which intersects with the plurality of first electrodes and is formed on the surface of the transparent substrate on the side facing the display panel, the display panel forms a planar third electrode which faces the plurality of first electrodes and the plurality of second electrodes on a surface thereof on a side facing the touch panel, and a distance between the plurality of first electrodes and the third electrode and a distance between the plurality of second electrodes and the third electrode are respectively set to 0.5 mm or less.

Claims

1. A display device with a touch panel comprising:

a display panel; and

a touch panel which is arranged to face the display panel in an opposed manner, wherein

the touch panel includes a transparent substrate, a plurality of first electrodes which is formed on a surface of the transparent substrate on a side facing the display panel, and a plurality of second electrodes which intersects with the plurality of first electrodes and is formed on the surface of the transparent substrate on the side facing the display panel,

the display panel forms a planar third electrode which faces the plurality of first electrodes and the plurality of second electrodes on a surface thereof on a side facing the touch panel, and

a distance between the plurality of first electrodes and the third electrode and a distance between the plurality of second electrodes and the third electrode are respectively set to 0.5 mm or less.

2. A display device with a touch panel according to claim 1, wherein the touch panel is adhered to the display panel by an adhesive agent.

3. A display device with a touch panel according to claim 1, wherein an air layer or an oil layer is provided between the display panel and the touch panel.

4. A display device with a touch panel according to claim 1, wherein either one of the plurality of first electrodes and the plurality of second electrodes is formed of a transparent conductive film.

5. A display device with a touch panel according to claim 1, wherein an insulation film is formed between the plurality of first electrodes and the plurality of second electrodes.

6. A display device with a touch panel according to claim 1, wherein the third electrode is formed of a transparent conductive film.

7. A display device with a touch panel according to claim 1, wherein the display panel is a liquid crystal display panel, and the display panel includes a polarizer arranged on the third electrode.

8. A display device with a touch panel according to claim 1, wherein the display panel is a liquid crystal display panel, and the touch panel has a polarizer which is arranged on a surface thereof on a side opposite to the display panel.